Method and base station for realizing channel transmission

Abstract

The invention discloses a method and base station for realizing channel transmission. The method comprises the steps that the base station determines a sub-frame set employed by a downlink control channel and / or the sub-frame set employed by a downlink service channel; and the base station schedules the downlink service channel across sub-frames through the downlink control channel. According to the method provided by the invention, the base station determines the sub-frame set employed by the downlink control channel and / or the sub-frame set employed by the downlink service channel, and the base station schedules the downlink service channel across the sub-frames through the downlink control channel. In a narrow band system and a coverage enhancement system, a timing relationship for channel transmission is prevented from being influenced by the fact that the sub-frames of a multicast / broadcast single frequency network MBSFN for transmitting multicast / broadcast service will occupy the whole system bandwidth, the timing relationship between the base station and a terminal is ensured, the MTC terminal can communicate normally, and the working quality of a system is improved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method and a base station for realizing channel transmission. Background technique [0002] The existing long-term evolution (LTE, Long-Term Evolution) or advanced long-term evolution system (LTE-A or LTE-Advance, Long-Term Evolution Advance) is based on the dynamic scheduling of each subframe for control channel transmission, that is, each subframe Both can transmit different control channels. figure 1 It is a schematic diagram of a frame structure of control channel transmission in a frequency division duplex (FDD, Frequency Division Duplexing) mode in the prior art. Such as figure 1 As shown, a 10ms wireless frame consists of twenty slots (slots) with a length of 0.5ms and numbered 0 to 19, and slots 2i and 2i+1 form subframes (subframe) i, i with a length of 1ms is 0 or a natural number. figure 2 It is a schematic diagram of the frame structure of the control chan...

AI Technical Summary

Problems solved by technology

At present, the LTE system supports low-cost MTC UEs and coverage-enhanced MTC UEs to use cross-subframe scheduling. However, in the LTE system, the multicast / multicast single frequency network (MBSFN) subframe for transmitting multicast / broadcast services will occupy the entire system bandwidth. However, low-cost MTC UEs and coverage-enhancing MTC UEs are not sure about MBSFN, so they will affect the timing relationship between downlink control channels and downlink traffic channels; especially in coverage-enhancing scenarios, MBSFN subframes for multicast / broadcast services It will affect the repeated transmission of different physical downlink channels and affect the quality of system work

[0007] To sum up, whether it is an MTC UE of a narrowband system or an MTC UE with enhanced coverage, the existing downlink channel transmission method cannot guarantee the timing relationship between the downlink control channel and the downlink traffic channel, which affects the normal communication and system work quality of the MTC terminal.

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